KYE Systems Corp. Genius SP-J330 User manual

Service Guide SP-J330
SERVICE GUIDE
KYE SYSTEM CORP
Version 1.0 Page 1 of 22

Service Guide SP-J330
Revision History
Version Date Change
1.0 12/12/2008
Version 1.0 Page 2 of 22

Service Guide SP-J330
Revision History………………………………………………………………….2
Table of contents……………………………………………………………...…3
Getting Start…………………………………………………….………………...4
Conventions Used in this Guide…………………………………………….…4
Safety Precautions………………………………………………………………4
Chapter 1. How to Handle Defective Returns……………………………….5
1.2 Problem………………………………………………………………………6
1.2.1 No power，LED （indicator）unlighted……………………………….7
1.2.2 No sound…………………………………………………………….…….8
1.2.3 Right channel no sound….……….……….……….……….……….……9
1.2.4 Left channel no sound….……….……….……….……….……….……10
1.2.5 VR no use……..………………………………………………………..…11
1.2.6 Noise………………………….……………………….……………...….12
1.2.7 LED indicators no light……………………………………….……..…..13
1.2.8 Input jack no use……..……………………………………….……..…..14
1.2.9 No effect when turning on 3D knob.…………………………..…..…..15
Chapter 2. Specification…………………………………………………..……16
Chapter 3. Block diagram…………………………………………..………….17
Chapter 4. Exploded view………………………………………………………18
Right speaker………………………………………………………………...….18
Left speaker…………………………..………………..…….…………….……19
Chapter 5. Part list…………………………………… …………….…………...20
Right speaker………………………………………………….……………….. 20
Left speaker……………………………………………………………………...20
Chapter 6 Important notes……………………………………………………….21
Chapter 7 Schematic diagram……………………………………………………22
Version 1.0 Page 3 of 22
Table of Contents

Service Guide SP-J330
Getting Started
Conventions Used in the Guide
Pay Special Attention: Instructions that are important to remember and may prevent
mistakes.
Caution: Information that, if not followed, may result in damage to the product.
Safety Precautions
The following precautions should be observed in handing the speaker described in
this guide:
Place the speakers on a flat, level and stable surface.
Do not place the speakers in environments subject to mist, smoke, vibration,
excessive dust, salty or greasy air, or other corrosive gases and fumes.
Do not drop or jolt the speakers.
Do not allow anything to drop into the subwoofer case through its ventilator, as it
could result in fatal electric shock or fire.
Place the unit far enough from other equipments for good heat dissipation.
Do not perform any maintenance with wet hand.
Preventforeignsubstance,such as water, other liquids or chemical, from entering
the speakers while performing maintenance procedures on the speakers.
Version 1.0 Page 4 of 22

Service Guide SP-J330
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
FunctionOK
Version 1.0 Page 5 of 22
Receiving Defective speaker from customers
Return the speakers with proper
repacking to customers
Verifying problems
Proceeding
Necessary tests
Analyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Necessary tests
Verifying problems
Proceeding

Service Guide SP-J330
1.2 Problems
Item Problem Description
1.2.1 No power，LED （indicator）no light
1.2.2 No sound
1.2.3 Right channel no sound
1.2.4 Left channel no sound
1.2.5 No effect when rotating VR
1.2.6 Noise
1.2.7 LEDindicatorsnolight
1.2.8 Input jack no use
1.2.9 No effect when turning on 3D knob.
Version1.0 Page6of22

Service Guide SP-J330
*Attention
Please follow the numbered sequence marked within parenthesis given in
individual
Flow chat in that this is the best-recommended sequence to rectify the problems.
1.2.1 No power，LED （indicator）unlighted
Problem
Analyze
and
identify
the
causes
Solutions
Version 1.0 Page 7 of 22
Repair or replace
1.Defective AC
cable
2.Defective
transformer
1. Loose connection between transformer
secondary wire and PT1 on PW PCB
2. Loose connection between JK7 in PW PCB
and JK6 in AMP PCB
resolder or replace
No power，LED （indicator）unlighted
Repair or replace
2. defective VR1 in AMP PCB
1. PCB Copper foil broken

Service Guide SP-J330
1.2.2 no sound
Problem
Analyze and
identify the
causes
]
Solutions
Version 1.0 Page 8 of 22
1. PCB broken, dry-soldered, or
short-circuited
2. Input cable connected well or not
No sound
Repair, resolder or
replace
1.Power supply for IC1 in AMP PCB normal or
not; EC13, IC1,VR2 defective, dry-soldered or
short-circuited
3.Or JK4, JK5 in JK PCB defective
2. Connection between JK1 in AMP PCB and
JK2 in JK PCB well or not
Repair or replace

Service Guide SP-J330
1.2.3 Right channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 9 of 22
1. Input cable, or input jack
damaged or defective
2. Right Speaker cable
damaged or defective
3. Right driver unit dry-soldered
or defective
1. PCB broken, dry-soldered, or short-circuited
2. Defective VR1,VR2 in AMP PCB
3. JK4, JK5 in JK PCB defective
4. Loose connection between JK1 in AMP PCB and JK2 in
JK PCB
5. IC1 in AMP PCB defective
Replace or
replace
Re-connect ,
replace or repair
Right channel no sound

Service Guide SP-J330
1.2.4 Left channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 10 of 22
Re-connect,
replace or repair
1. Input cable, or input jack
damaged or defective
2. Left Speaker cable damaged
or defective
3. Left driver unit dry-soldered or
defective
1. PCB broken, dry-soldered, or short-circuited
2. Defective VR1, VR2 in AMP PCB
3. JK4, JK5 in JK PCB defective
4. Loose connection between JK1 in AMP PCB and JK2 in
JK PCB
5. IC1 in PW PCB defective
Repair or
replace
Left channel no sound